Granted Patent
Utility
US 6,700,910 · App. 09/503,740
Wavelength tunable laser and optical device
Inventors:
Masahiro Aoki, Shinya Sasaki, Tomonobu Tsuchiya, Hiroyuki Gomyo
Patented Case
View Patent ↗
Granted: Mar 2, 2004
Filed: Feb 15, 2000
Inventors
Masahiro Aoki
Shinya Sasaki
Tomonobu Tsuchiya
Hiroyuki Gomyo
Assignee (at issue)
HITACHI, LTD.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.